% !arara: pdflatex
% arara: indent: {overwrite: yes, trace: on}
\documentclass{article}
\usepackage{multirow}

\begin{document}
\begin{figure*}
	\centering
	\begin{tabular}{|c|c|c c c c|c|}
		\hline
		\multicolumn{2}{|c|}{\multirow{2}{*}{$V_{\rm rot}/{\sigma}$}}&\multicolumn{4}{c|}{W1}\\
		\cline{3-6}
		\multicolumn{2}{|c|}{}&3&6&9&12\\
		\hline
		\multirow{6}{*}{W2} & \multirow{3}{*}{3} & $0.090475\pm 0.011115$ & \multirow{3}{*}{21} & \multirow{3}{*}{6} & \multirow{3}{*}{3} \\
		                    &                    & $0.14861\pm 0.03562$   &                     &                    &                    \\
		                    &                    & $0.1861 \pm 0.01728$   &                     &                    &                    \\
		                    & 6                  & 8                      & 14                  & 5                  & 2                  \\
		                    & 9                  & 8                      & 14                  & 5                  & 2                  \\
		                    & 12                 & 8                      & 14                  & 5                  & 2                  \\
		\hline
	\end{tabular}
	\caption{Multirow in multirow}
	\label{ta.Multirow}
\end{figure*}
\end{document}
